Apps, guidance and free resources.

Organises symptoms, health concerns, vulnerability, chronology and possible environmental exposure indicators for clearer healthcare discussion. It does not diagnose, prove causation or prescribe treatment.

Organises property conditions, moisture, mold, contamination indicators, exposure pathways, occupancy and environmental risk factors. It identifies questions requiring investigation; it is not a survey, test or safety declaration.

Identifies areas of agreement, disagreement, chronology and uncertainty, then maps reasonable routes including investigation, testing, healthcare discussion, monitoring or no immediate escalation where evidence does not support it.

A paid, property-wide Remediation / Decontamination app. It begins with reasonable suspicion or credible evidence, helps identify possible sources, reservoirs, movement and exposure pathways, compares proportionate risk-reduction routes, and records objectives for independent clearance and resolution. It may follow Parallax 1–3 or begin independently. It is not a scorecard: one serious unresolved issue may control the next action.

INDEPENDENT ROUTE Parallax 4 may begin with Parallax 1–3 findings or other credible evidence, including a laboratory report, professional survey, documented water damage or confirmed contamination. It does not require prior completion of Parallax 1–3.

A professional inspection app used with your chosen instruments and methods. It organises room and building observations, performs automated calculations and highlights the highest-risk areas subject to the equipment selected, the quality of the inputs and the stated limitations. Professional judgement remains essential. White-label versions are available.

Groups symptoms, timing and home or environmental clues to indicate which Building Forensics route may be most useful next.

Guides the choice of sample, location and method before money is spent on testing.

Brings building observations, temperature, relative humidity and specific humidity together to indicate where mold and moisture risks need closer investigation.

Groups behaviour and health changes alongside infections, timing, places and environmental changes for clearer professional discussion.

Organises memory and thinking changes with sleep, fatigue, timing, diagnosed conditions and possible environmental changes.

Provides two tenant guides and a five-letter action pack covering notification, follow-up, inspection, remediation and complaints.

Presents research papers and author papers with their subject, source and review status clearly identified.

Explains complex environmental and health-related laboratory findings, important limitations and useful next questions for professional discussion.